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CN107148648B 估计图像序列的两个不同颜色分级版本之间的颜色映射的方法和设备 失效 - 权利终止

估计图像序列的两个不同颜色分级版本之间的颜色映射的方法和设备
摘要：
本公开涉及用于处理图像序列的方法和设备，包括估计所述图像序列的以第一颜色量表示其值的第一颜色分级版本与所述图像序列的以第二颜色量表示其值的第二颜色分级版本之间的颜色映射。所述方法的特征在于其包括：‑通过组合所述图像序列的第一颜色分级版本中在时间上位于所确定的时刻的至少两个图像来获得(10)第一复合图像，使得所述第一复合图像的内容包括所述至少两个图像中的每个图像的内容的至少一部分，并且通过组合所述图像序列的第二颜色分级版本中在时间上位于相同的所确定的时刻的至少两个图像来获得第二复合图像，使得所述第二复合图像的内容包括所述至少两个图像中的每个图像的内容的至少一部分；以及‑通过估计将所述第一复合图像的颜色值映射到所述第二复合图像的颜色值的颜色映射函数来估计(20)图像的第一颜色分级版本和第二颜色分级版本之间的颜色映射。
摘要（英）：

The present disclosure relates to a method and device for processing a sequence of pictures comprising estimating a color mapping between a first color-graded version of said sequence of pictures whose values are represented in a first color volume and a second color-graded version of said sequence of pictures whose values are represented in a second color volume. The method is characterized in that it comprises: - obtaining (10) a first composite picture by assembling at least two pictures temporarily located at determined time instants in the first color-graded version of the sequence of pictures, and a second composite picture by assembling a same number of pictures temporarily located in the second color-graded version of the sequence of pictures at the same determined time instants; and - estimating (20) said color mapping between said first and second color-graded versions of the picture by estimating a color mapping function that maps the color values of said first composite picture onto the color values of said second composite picture.

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